final version

simulator_SIC_XE/gui/qt/MachineController.cpp

@@ -3,12 +3,15 @@
 #include <chrono>
 #include <QDebug>
 
+using namespace std::chrono;
+
 MachineController::MachineController(std::shared_ptr<Machine> machine, QObject *parent)
     : QObject(parent), m_machine(std::move(machine))
 {
     if (!m_machine) {
         m_machine = std::make_shared<Machine>();
     }
+    m_lastUpdateTime = steady_clock::now();
 }
 
 MachineController::~MachineController() {
@@ -38,14 +41,27 @@ void MachineController::step() {
 }
 
 void MachineController::runLoop() {
+    const auto minUpdateInterval = milliseconds(16); 
+    
     while (m_running.load()) {
         try {
             if (m_machine) {
                 m_machine->execute();
-                m_machine->tick(); 
-                emit tick();
+                m_machine->tick();
+                m_ticksSinceLastUpdate++;
+                
+                // Throttle GUI updates to 60 Hz
+                auto now = steady_clock::now();
+                auto elapsed = duration_cast<milliseconds>(now - m_lastUpdateTime);
+                
+                if (elapsed >= minUpdateInterval) {
+                    emit tick();
+                    m_lastUpdateTime = now;
+                    m_ticksSinceLastUpdate = 0;
+                }
                 
                 if (m_machine->isStopped()) {
+                    emit tick(); 
                     m_running.store(false);
                     break;
                 }

simulator_SIC_XE/gui/qt/MachineController.h

@@ -27,6 +27,8 @@ private:
     std::atomic<bool> m_running{false};
     std::thread m_thread;
     std::shared_ptr<Machine> m_machine;
+    std::atomic<int> m_ticksSinceLastUpdate{0};
+    std::chrono::steady_clock::time_point m_lastUpdateTime;
 };
 
 #endif // MACHINECONTROLLER_H

simulator_SIC_XE/gui/qt/main.cpp

@@ -4,6 +4,9 @@
 
 int main(int argc, char **argv) {
     loadInstructionSet();
+    
+    qputenv("QT_QPA_PLATFORM", "xcb");
+    
     QApplication app(argc, argv);
     MainWindow w;
     w.show();

simulator_SIC_XE/gui/qt/mainwindow.cpp

@@ -102,6 +102,8 @@ MainWindow::MainWindow(QWidget *parent) :
     
     // Connect menu actions
     connect(ui->actionLoad_Object_File, &QAction::triggered, this, &MainWindow::loadObjectFile);
+    connect(ui->actionAbout, &QAction::triggered, this, &MainWindow::showAboutDialog);
+    connect(ui->actionFrequency, &QAction::triggered, this, &MainWindow::showFrequencyDialog);
     
     setupMemoryDisplay();
     setupDisassemblyDisplay();
@@ -978,3 +980,51 @@ void MainWindow::loadObjectFile()
             tr("Failed to load object file: %1").arg(e.what()));
     }
 }
+
+void MainWindow::showAboutDialog()
+{
+    QMessageBox::about(this, tr("About SIC/XE Simulator"),
+        tr("SIC/XE Simulator\nby Zan Skvarca\n2025"));
+}
+
+void MainWindow::showFrequencyDialog()
+{
+    if (!m_machine) return;
+    
+    QDialog dialog(this);
+    dialog.setWindowTitle(tr("Set Frequency"));
+    dialog.setModal(true);
+    
+    QVBoxLayout *layout = new QVBoxLayout(&dialog);
+    
+    QLabel *currentLabel = new QLabel(tr("Current frequency: %1 Hz").arg(m_machine->getSpeed()), &dialog);
+    layout->addWidget(currentLabel);
+    
+    QLabel *newLabel = new QLabel(tr("New frequency (Hz):"), &dialog);
+    layout->addWidget(newLabel);
+    
+    QLineEdit *freqInput = new QLineEdit(&dialog);
+    freqInput->setValidator(new QIntValidator(1, 1000000000, &dialog));
+    freqInput->setText(QString::number(m_machine->getSpeed()));
+    layout->addWidget(freqInput);
+    
+    QHBoxLayout *buttonLayout = new QHBoxLayout();
+    QPushButton *submitBtn = new QPushButton(tr("Submit"), &dialog);
+    QPushButton *cancelBtn = new QPushButton(tr("Cancel"), &dialog);
+    buttonLayout->addWidget(submitBtn);
+    buttonLayout->addWidget(cancelBtn);
+    layout->addLayout(buttonLayout);
+    
+    connect(submitBtn, &QPushButton::clicked, &dialog, &QDialog::accept);
+    connect(cancelBtn, &QPushButton::clicked, &dialog, &QDialog::reject);
+    
+    if (dialog.exec() == QDialog::Accepted) {
+        bool ok;
+        int newFreq = freqInput->text().toInt(&ok);
+        if (ok && newFreq > 0) {
+            m_machine->setSpeed(newFreq);
+            QMessageBox::information(this, tr("Success"),
+                tr("Frequency set to %1 Hz").arg(newFreq));
+        }
+    }
+}

simulator_SIC_XE/gui/qt/mainwindow.h

@@ -51,6 +51,8 @@ private slots:
     void onDisassemblyGoToStart();
     void onDisassemblyGoToEnd();
     void loadObjectFile();
+    void showAboutDialog();
+    void showFrequencyDialog();
 
 private:
     Ui::MainWindow *ui;